20421131103222 has 16 divisors (see below), whose sum is σ = 40843678572480. Its totient is φ = 6806807640072.

The previous prime is 20421131103203. The next prime is 20421131103227. The reversal of 20421131103222 is 22230113112402.

It is a super-3 number, since 3×20421131103222³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20421131103192 and 20421131103201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20421131103227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58827772 + ... + 59173887.

It is an arithmetic number, because the mean of its divisors is an integer number (2552729910780).

Almost surely, 2^{20421131103222} is an apocalyptic number.

20421131103222 is an abundant number, since it is smaller than the sum of its proper divisors (20422547469258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20421131103222 is a wasteful number, since it uses less digits than its factorization.

20421131103222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118030507.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 20421131103222 its reverse (22230113112402), we get a palindrome (42651244215624).

The spelling of 20421131103222 in words is "twenty trillion, four hundred twenty-one billion, one hundred thirty-one million, one hundred three thousand, two hundred twenty-two".